A high rate and long-cycle-life anode based on micrometer-sized Pb powder for sodium-ion batteries
- Authors
- Kim, Changhyeon; Kim, Huihun; Sadan, Milan K.; Jeon, Minyeong; Cho, Gyu-Bong; Nam, Tae-Hyun; Cho, Kwon-Koo; Ahn, Jou-Hyeon; Ahn, Hyo-Jun
- Issue Date
- 15-Dec-2021
- Publisher
- Elsevier BV
- Keywords
- Long cycle life; Sodium-ion batteries; High rate; Pb anode; Microstructure; Scanning electron microscopy
- Citation
- Journal of Alloys and Compounds, v.886
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Alloys and Compounds
- Volume
- 886
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/2857
- DOI
- 10.1016/j.jallcom.2021.161240
- ISSN
- 0925-8388
1873-4669
- Abstract
- Pb powder was investigated as an active material as anode for sodium-ion batteries. Precisely, a Pb anode comprising micrometer-sized Pb powder modified with multi-walled carbon nanotubes was fabricated. The anode showed an excellent rate capability, as well as reversible capacities of 370 mAh g-1 at 12.8 C (6208 mA g-1). In addition, the Pb anode exhibited a stable cycle life during 1000 cycles at 10 C with a high reversible capacity of 423 mAh g-1. Using electrochemical tests, scanning electron microscopy, and energydispersive X-ray spectroscopy, we revealed the origin of this excellent performance: the micrometer-sized Pb powder undergoes self-healing during cycling, resulting in fiber-like nanometer-sized Pb particles that reinforce the anode structure and provide fast electron transport pathways. (c) 2021 Elsevier B.V. All rights reserved.
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